Chapter 17 Earth’s Cycles

axis Turn & Talk An imaginary line that goes through the center of the earth passing through the North Pole and the South Pole

rotation Turn & Talk The spinning of Earth around its axis (24 hours)

revolution Turn & Talk The movement of one object around another. Earth’s trip around the Sun. (1 Year)

orbit Turn & Talk The path Earth follows as it revolves around the Sun.

ellipse Turn & Talk A circle stretched out in opposite directions. Earth’s path around the Sun is an ellipse.

eclipse Turn & Talk Occurs when one object in space gets between the Sun and another object, and casts its shadow on the other object.

lunar eclipse Turn & Talk When the Moon passes through Earth’s shadow

solar eclipse Turn & Talk Occurs when the Moon passes between the Sun and the Earth and casts its shadow on Earth.

constellation Turn & Talk Star patterns